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Endoscopic balloon dilation is an effective treatment for achalasia, with minimal morbidity (60 % experience long-term benefit).

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Sigmoid volvulus is a well-recognized phenomenon in the elderly but rare in children. The proposed mechanism involves rotation of a redundant sigmoid loop around a narrow, elongated mesentery with subsequent vascular occlusion. The condition can be intermittent or may resolve spontaneously, complicating diagnosis. Early diagnosis is imperative to prevent ischemic complications including necrosis, perforation, and sepsis. Abdominal pain, abdominal distention, and vomiting are the most common presenting symptoms, however abdominal tenderness is uncommon. Colonic dilation is the most frequent finding on abdominal radiograph. Contrast enema reveals a “bird’s beak” configuration of the twisted colon and moreover, is successful in reducing the majority of pediatric cases. If there is no evidence of bowel ischemia or perforation, endoscopic reduction has been proposed as first-line treatment for sigmoid volvulus, especially in children. We report the case of 15-year-old male in which endoscopic reduction of sigmoid volvulus was successful without complication.

Cow’s milk protein allergy (CMPA) is an abnormal immunologic response to bovine protein that can result in various gastrointestinal and cutaneous manifestations including diarrhea, failure to thrive, malabsorption, and even protein-losing enteropathy. We describe a case of a 7-month-old breastfed male who presented with severe atopic dermatitis, emesis, oily diarrhea, failure to thrive, electrolyte disturbance, and hemodynamic instability. Following stabilization, additional evaluation revealed concern for abetalipoproteinemia. Ultimately, the patient’s symptoms resolved with introduction of an elemental formula and returned with reinitiation of cow’s milk protein, confirming the diagnosis of severe CMPA. It is important for the general practitioner to be aware of the various presentations and have a high index of suspicion for CMPA as no symptom or diagnostic test is pathognomonic for diagnosis. Even though it can mimic other causes of malabsorption, a trial with extensively hydrolyzed or elemental formula should be attempted before undertaking invasive testing.